Automobile-jack.



H. D. EDWARDS & 3. T. MEGREDY.

AUTOMOBILE JACK.

APPFICATION FILED SEPT-2|, 1914.

Patented Apr. 27, 1915.

WI T/VESSES A ITOR/VEY THE NORRIS PETERS 60., PHOTO-LITHOU WASHINGTON. Dc.

UNITED %FATF% FATE 1 f @FFIfiE.

HARRY o. nnwnnns ND JOHN T. rinennrY, or KANSAS CITY, MISSOURI.

AUTOMOBILE-JACK.

Application filed September 21, 1914.

[b all whom it may concern Be it known that we, HARRY C. EDWARDS andJOHN T. MEGREDY, citizens of the United States, residing at Kansas City,in the county of Jackson and State of Missouri, have invented certainnew and useful Improvements in Automobile Jacks, of which the followingis a specification.

lhis invention relates to automobile jacks of that class whereby asingle operator is enabled to easily and quickly lift or jack up anautomobile, and the object is to produce an efficient jack embodying thedesirable features of simplicity, durability and cheapness ofconstruction and installation.

To this end the invention consists in certain novel and peculiarfeatures of construction and organization as hereinafter described andclaimed; and in order that it may be-fully understood, reference is tobe had to the accompanying drawing, in which Figure 1, is a sideelevation of an automobile jack embodying the invention. Fig. 2, is atop plan view, partly broken away, of a part of the ack. Fig. 3, is arear end view' of the jack. Fig. at, is a side view of a portion of aslightly modified form of the ack, a shaft thereof being shown insection.

In the said drawing 1 indicates a pair of parallel angle irons adaptedto be secured rigidly to the floor of a garage, 1n any su1t-,

able manner, and each angle iron preferably consists of two sectionsbolted together at 2, so that the length of the bed frame constituted bythe angle irons, may be increased or diminished to accommodate the sizeof the car or the garage. Secured rigidly to and projecting upwardlyfrom the said bed frame near the opposite ends of each angle iron orside thereof, are standards 3, and arranged adjacent and at the innersides of and supported from said standards are journaled rollers 4.

A lifting frame of rectangular form comprises side rails 5 of angle ironand end bars 6, connecting the ends of rails 5, the end bars 6 being ofdropped form to enable the differential housing of an automobile, topass over them when the car is run on or off the jack, and this liftingframe will preferably be made in sections adjustably connected to- ISpecification of Letters Patent.

Patented Apr. 27, 1915.

Serial No. 862,709.

rollers l in raising or lowering the car without tilting it; it beingnoted by reference to Figs. 1 and 3 particularly, that the wheels 4 andcam bars 7 are disposed in superposed relations, and that when the liftframe is in normal position, the high ends of the cam surfaces of saidbars 7, are resting on the said rollers. In Fig. 1, the cam bars (oneonly appearing) are shown as provided with teeth 9 along their camsurfaces, for a purpose which hereinafter appears.

Referring now to the lift-frame operating mechanism, 10 is a shaftextending transversely of and over the bed-frame at a suitable pointbetween the front and rear pairs of rollers 4:, and j ournaled inbearing standards 11 rigidly secured in any suitable manner to rails 1,and in a third bearing standard, 12, disposed a considerable distanceoutward from the bed-frame; said shaft between the bearing standard 12and the bedframe being provided with a crank 13 which, when thelift-frame is lowered or in normal'position as shown, rests upon thefioorof the garage so that the wheels of a car can run over it. Theupper half of standard 12 is semi-circular in contour and peripherallyformed with ratchet teeth 14 for engagement by a latch 15 carried by alever 16, the lever also carrying a pivoted grip 17 connected by a rod18 with the latch for the purpose of disengaging the same from a ratchettooth 1 1, it being preferred that the latch shall be of the ordinaryspring-actuated type, the spring being hidden in the casing of thelatch.

Secured rigidly on shaft 10 is a pair of sprocket wheels 19, connectedby chains 20 with pull rods 21 secured at their rear ends on therearmost bolts 8, by retaining nuts 22.

In Fig. 4c, smooth-tread rollers are re placed by peripherally toothedrollers adapted for engagement with cam bars 7 as a pinion engaging arack bar. In this construction the rearmost pair of rollers will bemounted on shaft 10 which will be transferred in position to saidrollers, together with hearing 12 and the parts composing the latchmechanism, the sprocket wheels 19, chains 20 and rods 21 being dispensedwith.

Assuming that a car is run over the jack and stopped in position shownby the dotted wheels, in Figs. 1 and 3, it will be seen that the car canbe readily jacked-up by swinging the lever 16 in the direction indicatedby the arrow, Fig. 1, as by this action shaft O transversely of andbelow the'said frame,

is turned and through the pull connection described, imparts forwardmovement" to the lift-frame, the lift-frame also moving upward throughthe travel of the cam bars on the rollers. The lift-frame, in -movingupward, encounters the axles of the car and occurrence the lift-framewill traveldownward: and rearward upon the rollers to normal posltion,this action of-course lowerlng the car' until its wheels, again restupon the floor: .The operation in connection with the construction shownby, Fig. 4, is identical with that described. 25.

From the above description it willbe ap parent that we have produced anautomobile jack embodying thefeature's of advantage enumerated asdesirable andwhich may be modified inminor particulars as regards itsform, proportion, detail construction and organization of parts, withoutdeparting from the spirit and scope of the appended claims.

We claim: r v 1. An automobile jack, icomprising two pairs of journaledrollers, a frame provided with cam bars for operation on said rollers toeifect a variation'in the altitude of the frame, a suitably journaledshaft extending and provided at one side of'the latter with acrankadapted to occupy a substantially floor-level position when the saidframe is in normal or lowered position, so that the wheels of a motorcar may roll over without injuring the said crank, connections betweensaid shaft and said'frame whereby rotation of the former shall effectendwise movement of the frame and the consequent raising thereof'throughthe cooperative action of the cams and rollers, and means for operatingthe shaft.

2. An automobile jack comprising two pairs of journaled rollers, a frameprovided with cam bars for operation on said rollers, asuitably-journaled shaft extending transversely of and below said frame,provided at one side of the latter with a crank adapt ed when'verticallypendant to contact with the floor, a lever secured to the shaft outwardof the crank, means whereby the operation of said lever effects climbingmovement of the cam bars on said rollers, and latch mechanism to securethe lever in adjusted position.

3. An automobile jack comprising two pairs of journaled rollers, a frameprovided with cam bars for operation on said rollers, asuitably-journaled shaft extending transversely of and below said frame,provided at one side of the latter with a crank adapted when verticallypendant to contact with the floor, a pair of sprocket wheels secured. onsaid shaft, chains engaging the wheels and connected to said frame, alever secured to the shaft outward of said crank, and latch 'mechanismto secure the lever in adjusted position.

In testlmony whereof, we aflix our signatures, in the presence of twowitnesses.

HARRY O. EDWARDS. JOHN T. MEGREDY.

Witnesses:

FRANK R. GLOBE, 'G. Y. THORPE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latents,

Washington, D. G.

